Features of Tropical Volcanic Rock and Soil of Jakarta-Bandung HSR and Engineering Countermeasures  

作　　者：ZHAO Dou WANG Shujie ZHENG Mingda(Translated) 

机构地区：[1]China Railway Design Corporation [2]Track,Station and Yard Design and Research Institute,China Railway Design Corporation [3]不详

出　　处：《Chinese Railways》2024年第1期30-37,共8页中国铁路（英文版）

摘　　要：The geological features of three types of tropical volcanic rock and soil distributed along Jakarta-Bandung high-speed railway(HSR),including pozzolanic clayey soil,mud shale and deep soft soil,are studied through field and laboratory tests.The paper analyzes the mechanism and causes of engineering geological problems caused by tropical volcanic rock and soil and puts forward measures to control subgrade slope instability by rationally determining project type,making side slope stability control and strengthening waterproofing and drainage.The“zero front slope”tunneling technology at the portal,the simplified excavation method of double-side wall heading and the cross brace construction method of arch protection within the semi-open cut row pile frame in the“mountainside”eccentrically loaded soft soil stratum are adopted to control the instability of tunnel side and front slopes,foundation pits and working faces;CFG or pipe piles shall be used to reinforce soft and expansive foundation or replacement measures shall be taken,and the scheme of blind ditch+double-layer water sealing in ballastless track section shall be put forward to prevent arching deformation of foundation;the treatment measures of CFG pile,pipe pile and vacuum combined piled preloading are adopted to improve the bearing capacity of foundation in deep soft soil section and solve the problems of settlement control and uneven settlement.These engineering countermeasures have been applied during the construction of Jakarta-Bandung HSR and achieved good results.

关 键 词：Jakarta-Bandung HSR tropical volcanic rock and soil engineering geological features engineering geological problems engineering countermeasures 

分 类 号：U238[交通运输工程—道路与铁道工程]